This patch implements the generic board init as described in doc/README.generic-board. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Signed-off-by: Scott McNutt <smcnutt@psyent.com> Reviewed-by: Stefan Roese <sr@denx.de>master
Thomas Chou
10 years ago
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70fbc46192
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/*
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* (C) Copyright 2003, Psyent Corporation <www.psyent.com> |
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* Scott McNutt <smcnutt@psyent.com> |
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* |
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* (C) Copyright 2000-2002 |
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#include <common.h> |
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#include <stdio_dev.h> |
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#include <watchdog.h> |
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#include <malloc.h> |
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#include <mmc.h> |
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#include <net.h> |
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#ifdef CONFIG_STATUS_LED |
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#include <status_led.h> |
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#endif |
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#if defined(CONFIG_SYS_NIOS_EPCSBASE) |
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#include <nios2-epcs.h> |
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#endif |
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#ifdef CONFIG_CMD_NAND |
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#include <nand.h> /* cannot even include nand.h if it isnt configured */ |
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#endif |
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DECLARE_GLOBAL_DATA_PTR; |
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/*
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* All attempts to come up with a "common" initialization sequence |
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* that works for all boards and architectures failed: some of the |
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* requirements are just _too_ different. To get rid of the resulting |
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* mess of board dependend #ifdef'ed code we now make the whole |
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* initialization sequence configurable to the user. |
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* |
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* The requirements for any new initalization function is simple: it |
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* receives a pointer to the "global data" structure as it's only |
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* argument, and returns an integer return code, where 0 means |
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* "continue" and != 0 means "fatal error, hang the system". |
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*/ |
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typedef int (init_fnc_t) (void); |
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/************************************************************************
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* Initialization sequence * |
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***********************************************************************/ |
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init_fnc_t *init_sequence[] = { |
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#if defined(CONFIG_BOARD_EARLY_INIT_F) |
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board_early_init_f, /* Call board-specific init code early.*/ |
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#endif |
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#if defined(CONFIG_SYS_NIOS_EPCSBASE) |
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epcs_reset, |
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#endif |
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env_init, |
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serial_init, |
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console_init_f, |
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display_options, |
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checkcpu, |
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checkboard, |
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NULL, /* Terminate this list */ |
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}; |
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/***********************************************************************/ |
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void board_init(void) |
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{ |
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bd_t *bd; |
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init_fnc_t **init_fnc_ptr; |
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static gd_t gd_data; |
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static bd_t bd_data; |
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/* Pointer is writable since we allocated a register for it. */ |
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gd = &gd_data; |
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/* compiler optimization barrier needed for GCC >= 3.4 */ |
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__asm__ __volatile__("" : : : "memory"); |
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gd->bd = &bd_data; |
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gd->baudrate = CONFIG_BAUDRATE; |
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gd->cpu_clk = CONFIG_SYS_CLK_FREQ; |
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bd = gd->bd; |
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bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; |
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bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE; |
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#ifndef CONFIG_SYS_NO_FLASH |
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bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; |
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#endif |
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#if defined(CONFIG_SYS_SRAM_BASE) && defined(CONFIG_SYS_SRAM_SIZE) |
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bd->bi_sramstart = CONFIG_SYS_SRAM_BASE; |
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bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; |
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#endif |
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for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) { |
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WATCHDOG_RESET(); |
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if ((*init_fnc_ptr) () != 0) |
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hang(); |
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} |
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WATCHDOG_RESET(); |
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/* The Malloc area is immediately below the monitor copy in RAM */ |
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mem_malloc_init(CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN); |
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#ifndef CONFIG_SYS_NO_FLASH |
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WATCHDOG_RESET(); |
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bd->bi_flashsize = flash_init(); |
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#endif |
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#ifdef CONFIG_CMD_NAND |
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puts("NAND: "); |
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nand_init(); |
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#endif |
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#ifdef CONFIG_GENERIC_MMC |
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puts("MMC: "); |
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mmc_initialize(bd); |
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#endif |
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WATCHDOG_RESET(); |
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env_relocate(); |
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WATCHDOG_RESET(); |
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stdio_init(); |
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jumptable_init(); |
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console_init_r(); |
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WATCHDOG_RESET(); |
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interrupt_init(); |
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#if defined(CONFIG_BOARD_LATE_INIT) |
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board_late_init(); |
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#endif |
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#if defined(CONFIG_CMD_NET) |
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puts("Net: "); |
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eth_initialize(bd); |
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#endif |
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/* main_loop */ |
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for (;;) { |
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WATCHDOG_RESET(); |
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main_loop(); |
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} |
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} |
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